An efficient total synthesis of maesanin and related quinones is repor
ted, through direct alkylation of 1,2,4,5-tetramethoxybenzene with alk
ylbromides, followed by oxidation with cerie ammonium nitrate (CAN) wh
ich provokes formation of the quinone and deprotection of the more hin
dered methyl ether in one step, to furnish the desired 2-hydroxydmetho
xy-1,4-benzoquinones 1a-h. (C) 1998 Elsevier Science Ltd. All rights r
eserved.